The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon¹⁻³. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental...
Recent studies of headwater streams have demonstrated their importance to overall watershed biodiversity, nutrient cycling, and energy flux. However, little attention has been paid to long-term effects of forest harvest on macroinvertebrate communities in headwater streams. This study investigated headwater stream macroinvertebrate communities in the H.J. Andrews Experimental Forest, Oregon,...
This study was initiated by the Resort and Commercial Recreation Association (RCRA) in an attempt to determine the feasibility of a national certification program for resort and commercial recreation employees. Current national recreation related certification programs do not adequately address the needs of current commercial recreation employers (Gladwell & Beeler,...
This report, dealing with labor and equipment performance standards, is the first of a series on costs and efficiencies in seed processing. A later report will consider equipment and facilities costs. These and time standards will be used to synthesize models of seed processing plants to determine what, effect length...
This report is one of a series issued in cooperation with the ANC-23 panel on sandwich construction of the departments of the Air Force, Navy, and Commerce. Information reviewed and reaffirmed 1960. Original report issued April 1955.
This report is one of a series issued in cooperation with the Air Force-Navy-Civil Subcommittee on Aircraft Design Criteria under the supervision of the Aircraft Committee of the Munitions Board. Information reviewed and reaffirmed March 1955 and 1960. Results here reported were obtained during 1950.